ASTROSAT CZTI

Data Quality Report

Orbit 34642

Creation date: 2022-02-23T20:02:12.446510
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1T05_008T01_9000004956_34642cztM0_level2.evt modeM0/AS1T05_008T01_9000004956_34642cztM0_level2_quad_clean.evt
Size (bytes)487,048,32054,311,040
Size464.5 MB 51.8 MB
Events in quadrant A2,559,756324,971
Events in quadrant B3,364,506317,673
Events in quadrant C2,770,416321,410
Events in quadrant D5,693,565306,056

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109423
B0132272
C0111482
D0206512

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5338140.262271%
B53381893.540652%
C5338370.693143%
D53384137.736980%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7281 5339 3 3 0.04% 0.06%
B 7281 5339 121 121 1.66% 2.27%
C 7281 5339 19 19 0.26% 0.36%
D 7281 5339 332 332 4.56% 6.22%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 47840 366.35 639 627 128.9
A 9 143 30208 229.54 639 627 128.9
A 13 254 9993 72.68 639 627 128.9
B 5 172 758584 6384.9 623 608 118.7
B 0 189 51412 427.95 623 608 118.7
B 4 173 32182 265.97 623 608 118.7
C 15 214 226463 1589.49 616 620 142.1
C 0 10 95469 667.55 616 620 142.1
C 14 67 21296 145.52 616 620 142.1
D 8 195 1857972 11333.41 606 594 163.9
D 10 203 869822 5303.88 606 594 163.9
D 2 250 108287 657.12 606 594 163.9

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter